Adjustable chair for exercising apparatus



Nov. 22, 1955 A. J. PFAUS ADJUSTABLE CHAIR FOR EXERCISING APPARATUS 2Sheets-Sheet l Filed Aug. 18, 1953 NOV 22, 1955 A. J. PFAus 2,724,592

ADJUSTABLE CHAIR FOR EXERCISING APPARATUS u Filed Aug. 18, 1955 2Sheets-Sheet 2 ,Iggy

36 l l l i 62 Andrew d Pfaus INI/EN TOR.

BY QM WWW 5MG:

ADJUSTABLE CHAIR FOR EXERCISING APPARATUS Andrew J. Pfaus, Great Neck,N, Y. Application August 18,1953, Serial No. 375,008 t 1 Claim. `(Cl.27e- 58) This invention relates to new and useful improvements andstructural refinements in adjustable chairs, and the principal object ofthe invention is to provide a chair of the character herein described,which is `particularly well adapted for use in association withmechanical apparatus such as is employed for exercising foot and legmuscles.

Specifically, the invention concerns `itself with the` provision of anadjustable chair such as may be used with the exercising apparatusdisclosed in my copending patent application, Serial Number 317,109,filed on October 27, 1952, the arrangement of the adjustable chair beingsuch as to enable the user to assume a correct posture while theexercising apparatus is being manipulated.

An important feature of the invention resides in its versatileadjustability, both from the standpoint of seating height and distancefrom the exercising apparatus, while another feature of the inventionresides in its foldability which enables the same to be readily storedand conveniently transported when not in use.

Some of the advantages of the invention lie in its simplicity ofconstruction, in its efficient and dependable operation and itsadaptability to economical manufacture.

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

Figure 1 is a side elevational view of the invention;

Figure 2 is a top plan view thereof;

Figure 3 is a vertical sectional detail, on an enlarged scale, takensubstantially in the plane of the line 3-3 in Figure 2; t

Figure 4 is a sectional detail, taken substantially in` the plane of theline 4 4 in Figure l;

Figure 5 is a sectional detail, taken substantially in the plane of theline 5 5 in Figure 2;

Figure 6 is a sectional detail, taken substantially in the plane of theline 6-6 in Figure 1;

Figure 7 is a sectional detail, taken substantially in the plane of theline 7-7 of Figure 3;

Figure 8 is a sectional detail, taken substantially in the plane of theline 8-8 in Figure 3;

Figure 9 is a fragmentary perspective view illustrating one end portionof one of the arm rests used in the invention; and

Figure 10 is a perspective view of the chair in its folded position.

Referring now to the accompanying drawings in detail, the adjustablechair is designated generally by the reference character and embodies inits construction a horizontally elongated base 22 which is preferablyformed from tubular material and includes slidably telescoped sections22a, 22b, so that the length ofthe base may be adjusted as desired. Thebase 22 is secured in rice a preadjusted position by suitable set screws24 and one end portion of the base is provided with clamps 26 whereby anexercising apparatus designated generally by the reference character 28may be attached to the base. As already explained, this exercisingapparatus may be of such type as is disclosed in my copendingapplication Serial Number 317,109, filed October 27, 1952.

The intermediate portion of the side members of the base 22 may beequipped with rubber sleeves 30, or the like, so as to prevent the basefrom slipping, particularly when the device is submerged in water, suchas for example, during hydrotherapy.

A seat structure designated generally by the reference character 32 isprovided on the opposite end portion of the base` 22 and includes aplurality of slidably telescoped, vertically adjustable legs 34 `whichare tubular in construction and contain compression springs 36 whichurge the legs to their extended positions.

The upper ends of the legs 34 are connected together by side members 38,40 and a suitable seat platform 42 is fastened to these side members, asshown.

Moreover, a pairof clamp brackets 44, provided with clamping screws 46,are slidably positioned on the side` members 38 and a substantiallyU-shaped frame 48 of a back rest is pivotally connected to the brackets43, as indicated at 52. As is best shown in Figures 1 and 10, the backrest50 may be swung from an upright,

operative position to a folded inoperative position wherein it issuperposed on the seat panel or platform 42.

By virtue of the clamp brackets 43, the back rest 50 may be adjustedforwardly and rearwardly on the seat structure so that it is closer toor further away from the foot pedals 54 of the exercising apparatus 28.Moreover, by virtue of the vertical adjustability of the legs 34, theseat platform 42 may be raised or lowered. However, means are providedfor locking the seat platform in a predetermined elevated position aswell as for limiting the extent of vertical adjustment thereof, thesemeans consisting of a pair of slidably telescoped tubular members 56,58, the member 58 being secured to a transverse brace 60 at theunderside of the seat platform 42, while the member 56 is similarlysecured to a transverse brace 62 on the base 22. The member 56 isprovided at the upper end thereof with a clamp 64 which is frictionallyengageable with the member 58, so as to sustain the seat in apredetermined, elevated position. However, as soon as this clamp isloosened, the aforementioned springs 36 will tend to raise the seat tothe desired height and, of course, the seat may be lowered by simplypressing the same downwardly against the resiliency of the springs.

The aforementioned member 58 contains an axial rod 66 which is slidablein a tubular member 68 disposed in the member 56 and the rod 66 isprovided at its lower end with an enlarged head 70, the later 'beingengageable with a stop 72 at the upper end of the member 68, so as tolimit the extent of upward sliding movement of the seat under theinfluence of the springs 36.

The invention also contemplates the provision of a pair of substantiallyL-shaped arm rests 74 which are removably positioned at the oppositesides of the seat, the forward or lower portions of the arm rests beingreceivable in sockets '76 on the side members 38 at the front of theseat platform. These sockets are equipped with clamping screws 78 forthe purpose of sustaining the arm rests in position and it will be alsoobserved that a transverse rod 80 extends through the front of the sidemembers 40 and through the sockets 76, as is best shown in Figure 4. Theend portions of this rod are receivable in notches 82 provided in thelower ends of the arm rests 74, whereby the arm rests are prevented fromswinging or twisting laterally.

ably disposed in tubular sockets 84 which are carried by the sideportions of the frame 48 of the back rest 86 for'f'the purposehoiAsustaining the larm rests inr position'. When^-thewscrews86 areloosened; the back rest 48' may-be' shifted forwardly and rearwardly ofthe seat 1 platform-.42 whilei-the armrests-simply slidethroughthesocketsf84'.

When the invention i`snoti'n use, the arm rests 74 may be removedfr'omthe socketstructure and stored in a pair of4 spring-clips 88 which areaxed to the back ofV the bado-rest 50; as illustrated inf Figure l0.

It islto be alsownoted'th'atthe superstructure of theseat may beseparatedfr-,omthe-'base 22 by simply with drawingtheupperfsportions#of' the telescoped legs 34 from-the l'owei`portions'fthereof, loosening the clampjvt and' separat-ing theaforementioned member 58 from the member 5'6faf'ter` disconnecting` themember 68 from the 1 brace-*62, t'o which the member 68 is attached by aremovable screw90' (fsee` Figure 3).

From the-foregoing, thevconstruction and operation of" thefdevicelwillbe readily'understoodl andfurther eX'- planationisfbeli'eved to beunnecessary.- However, since An adjustable chair comprising an elongatedbase frame including telescopically adjustable pairs of opposite sideframe members, a set of telescopically adjustable legs rising from theside frame members of one of said pairs, horizontal side membersconnecting the upper ends of said legs, a seat platform supported bysaid horizontal side members, a pair vof bracketsi sleeved ontosaidhorizontal side members for adjustment along the same, a back restpivoted on said brackets for folding downwardly over the seat' platform,-a pair ofv horizontal cross membersjone extending between-said Ihorizontal-, side members and the other extending between the side framemembers of said one pair, and a'fpair of telescopically adjustabletubular members xed to said cross members, respectively, and oneclampingly engaging the other to hold said legs in different adjustedpositions.

References Citedin-the file ofthis patent

